Stand



H. G. TIFFANY.

STAND.

APPLICATION FILED FEB. 23. I92!- Patented Aug. 15, 1922'.

Z SHEETS-S HEET I-.

c A k W1 0 Q2 ATTORNEYS H. G. TIFFANY.

STAND. APPLICATION FILED FEB. 23. 1921.

Patented Aug. '15, 1922.

2 snznssnin 2.

ZNVENTOF? fiaero 677/05 BY To all whom it may concern:

' warren stares" HIERO e. TIFFANY, 0F s'r. Louis, irrssounr, Assrenon TOsIMF'LFX STEEL s'rAMmue & MANUFACTURING COMPANY, OF ST. LOUIS, ISSOURI,A GORlOEAflION 0F MIS4,

SOUR/I.

STAND.

Specification of Letters Patentif Patented Ai 1g; 15%, 1922. l

Applicationfil ed February 23,1921. s erial No lMfiy ii Be it known thatI, HIERO G. T :FFANv,. a citizen of the United States, residing at St.Louis, Missouri, have invented, a certain new and useful Improvement inStands, of which i the following is a full clear, and enact description,suchas'will enable others skilled in the artto which and use the same.

This invention relates to stands of the kind that are equipped withrollers or casters which are adapted to be depressed into engagementwith the floor so asto facilitate the movement of the stand from onepoint to another and thereafter raisedout of contact with the floor whenit is desired to have the stand remain stationary.

The main object of my invention is to provide an inexpensive stand ofthegeneral type above referred to that can be raised and lowered easily andwhich is of such design that the legs will beperfectly rigid when therollersare raised out of contact.

with the floor.

Another object is to provide an efficient raising and lowering mechanismfor stands of the character referred to which comprises a number of setsof toggle links connected to the legs of the stand andto vertl [lowerend portions of the legs, and an operating mechanism for said togglelinks consisting of a rock shaft arranged intermeingthe sleeves on thelegs depressed so as diate the legs and connected with operating 4 barswhose endportions are guidedbythe legs of the stan-d. Other objects anddesira 'bl'e featuresof my invention will-be hereinafter pointed out. H

Figure 1 of the drawings is a perspective view'of a standconstructed,inracoordance with my invention. 1 i i Figure 2 is alongitudinal sectional view of the lower end portion of one of the legsand the sleeve that surrounds same,

Figure 3 is a side" elevational view, showto hold the rollers-on thelegs outof'contact with thegfloor; and

Figure 4 is a side elevationaliview the stand, showing the sleeves onthe legs raised so as to cause the legs of the stand to be supported, bythe rollers or casters mounted in the lower ends of the legs 'Referringto the. drawings which illus-i trate the preferred form of my invention,

it apperta'ins to make resulting in an upw'ardmovement ,of the" stand,and the movement of said rock shaft 1Il'th8 opposite,idirectioncausingthe tog A designates legs 'of the stand l tionary position the sleevesor tubular sup porting, members C are depressed or moved.

downwardly with relation" to the legs so as",

floor and cause the weight of the stand to k 1' to lift the. rollers Boutv of contact with the be borne by the sleeves C. When it is de-.sired to move the stand from one point ;to another the'sleeves- C areraised ormoved upwardly with relation to the legs .so as to permit. therollers B on the. legs to-con, tact with the floor. l ,1

The means for raising and lowering the sleeves C consists of four setsoftoggle links 8O sleeves and an operating meohanism'forsald'toggle'links consisting of a rock shaft D "arranged transversely ofthe, stand at approximately. the center ofsame', as shown 1 connectedwith the legs Aand with the in Figure-l and combined with operatingbarsthat are joined to the-toggle links 1 the movement of the rockshaftcD in onew direction causing theitoggle .links to be Jstraightened,' .as shown inFigureB, thus.

gles to break or collapse, and thus permit the stand to movedownwardly'yfso as to bring the rollers ,B on thelegsinto engage.mentwith the floor.', I v

A pair oftoggle links 1 is provided for 1 each of the sleeves (hone link Of thQPSJlI i- Q i being pivotally connected at, its upper end bymeans of a pivot l tte the leg of, the stand, and the other link, of thepair being pivotally "connected j at its. lower end .by

means of alpivot'l tothe sleeves Cwith: I

which said pair ofto'ggle links co-operate The lowerlinkn of the pairisjprovided with an angularly-disposed portion 1? that pro; je'cts"vinto the sleeve 0 through a vertically-.1

- disposed slot 1' inthe upper portionpof.

thefsleeve, so as'to permit the 'pivot l of; I said flinkto be arrangedat] the vertical,

gle links 1, asshown in Figure 3, said lugs nates any tendency of thesleeves to cant,

twist or turn relatively to the legs, due to the fact that the lowerlinks of. the toggles are connected to the sleeves C at the verticallongitudinal axes of said sleeves, and' moreover, are guided by slots inthe sleeves and slots in the legs of the stand.

The rock shaft D of the toggle operating mechanism is arrangedhorizontally and is supported by horizontally-disposed braces 8connected to the legs A of the stand. In the form of my invention hereinillustrated said shaft is provided with an operating lever D arranged atone side of the stand so that it can be actuated easily by the personwho desires to move the stand. It will, however, be understood tiatvarious other forms of devices can be used for actuating the rock shaftD without departing from the spirit of my invention. The rock shaft D isprovided with two arms 4: arranged adjacent the ends of said shaft,shown in Figure 1, and connected by means of links 5 with the operatingbars 2 previously referred to that actuate the toggle links 1. The standis equipped with four operating bars,

two of which are connected with the arm 4 shaft, Each pair of'operatingbars 2 have their inner end portionslapped and pivotally connectedtogether by a pivot pin 6 that serves also to connect the operating barsto the link 5 which oins said bars to one of the arms on the rock shaftD, and said bars are provided at their inner endswithlaterallyprojecting lugs 7 arranged sothat the lug. on one bar 2will bear upon the upper edge of the other" operating bar with which it.co-operates .when the rock shaft D is turned in a direction tostraighten the tog- 7 serving as stops which hold the operating bars 2of each pair in parallel relation or in longitudinal alignment with eachother when the stand is supported by the sleeves Each of the operatingbars 2 is pivotally connected adjacent its outer end to one pairof'toggle links'l, and the extreme end portion of said operating bar isarranged ina vertically-disposed slot in the particular leg of the standwith which said bar co-operates, as shown in Figures and 4;. Accordinly, the operating bars 2 will be rigidly'lield and accurately guided,due to the fact that the inner end portions of said bars'are overlapped,and directly connected to the means that actuates said bars, and theouter end portions of said bars are guided by the legs A of the stand.

A stand of the kind above described can be manufactured at a low cost onaccount of its simplicity of construction, it can be easily moved fromplace to place on the rollers B. when the supporting sleeves C areraised, and when said supporting sleeves aredepressed or moveddownwardly into engagement with the floor, the legs of the stand will beperfectly rigid, due to the fact that the weight of the stand is borneby the sleeves C and the toggle links 1 which are connected to thesleeves in such a manner that the sleeves cannot twist or cant laterallyrelatively to the legs of the stand. The operating bars 2 and the togglelinks 1 are so constructedand arranged that the sleeves C on the legswill be locked securely in their extended position when the toggle links.are straightened, as shown in Figure 8', and as the outer end portionsof the operating bars 2 are guided by the legs of the stand, said barsprevent the toggle links from swaying or from moving laterally at thepoints where the links of each pair of toggles are connected together.In addition to thedesirable features above pointed out, my stand is ofneat and ornamental appearance and it can be raised and lowered easilyby simply depressing or raising the actuating member D on the rock shaftD.

Having thus described my inventiomwhat I claimas new and desiretosecureLetters Patent is: Y

1. A stand provided with legs, supporting members arranged in telescopicrelation with said legs, a pair of toggle links ac-1 10 sociated witheach leg and supporting mem her and pivotally connected with same such amanner that said links exert a downward thrust on said supportingmembers when the. links are straightened, and .an 5 operating mechanismfor saidtoggle links comprising an operating bar connected to each pairof toggle links and having its outer end projecting into an opening inthe adjacent leg of the stand, whereby said bar i is accurately guided.

2. A stand comprising legs equipped with casters or rollers,substantially tubularshaped supporting members arranged in telescopicrelation. with the lower end p'ortions of the legs, and toggle linkspivotally connected to said legs and to saidsupporting membersforraising and lowering the stand, each of the toggles comprising a linkhaving an angularly-disposed portion projecting through aligned,vertically-disposed slots in the supporting member and "in the leg whichsaid member surrounds and con nected to a pivot pin on the supportingmember that passes transversely through vertically-disposed slots in theleg of the stand.

3. In a stand, a leg, a longitudinally-movable sleeve surrounding thelower end portion of the leg, a toggle for reciprocating said sleevecomprising an upper link pivotally connected at its upper end to the legof the stand and a lower link pivotally connected at its lower end tosaid sleeve, an angularly-disposedportion on said lower link, verticallyaligned slots in the sleeve and in the portion of the leg which itsurrounds through which the angularly-disposed portion of said linkpasses, the pivot pin for said lower link being arranged transversely ofsaid sleeve at the longitudinal axis of said sleeve, andvertically-disposed slots in the leg of the stand through which saidpivot pin passes.

I 4. A stand provided with legs equipped with casters or rollers,vertically-movable sleeves surrounding the lower end portions of saidlegs, and operating toggles for said.

sleeves pivotally connected at their upper ends to the legs of the standand having their lower ends pivotally connected to said sleeves byangularly-disposed portions that project into the interior of thesleeves through aligned slots in thesleeves and in the portions of thelegs which the sleeves surround.

5. A stand comprising legs, supporting I members arranged telescopicrelation with the legs, toggles pivotally connected to the legs and tothe supporting members for effecting relative longitudinal movement ofsaid supporting membersand legs, and an' actuating means comprisingpairs of bars having' their inner end portions pivotally connectedtogether and arranged in over and guided by thelegs of the stand.

6. A stand comprising legs provided with sleeves surrounding the lowerend portions 1 of said legs, a toggle associated with each v le andcomposed of an upper link 'pivv otally connected to the leg and a lowerlink provided with an angularly-disposed casters or rollers, verticallyreciprocating portion that projects inwardlythroughthe sleeve and theportion of the leg which it surrounds, a transversely-disposed.pivot pinin the sleeve to which said angularly-dismeans for maintaining theoperating bars of each pair in substantially longitudinal alignment witheach other when the rock shaft is turned in a direction to raise thestand. HIERO G. TIFFANY.

45, lapped relation. and their outer end por- ,tions pivotally'connectedto said toggles

